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US 10,626,998 B2Granted
Drip emitter with check valve
AssigneeRain Bird Corporation
InventorSamuel R. Rulli
Life of this patent
Estimating the term…
Abstract
There is provided an online drip emitter that includes a check valve. The emitter uses a first diaphragm in the check valve and a second diaphragm spaced from the first diaphragm to provide pressure compensation. The second diaphragm communicates with a tortuous path and an outlet to regulate water emitting from the emitter depending on the supply pressure.
Claims12
An online drip emitter comprising:
- a body defining an inlet, an outlet and an interior chamber;
- a valve seat communicating with the inlet and located in the interior chamber upstream of the outlet;
- a first diaphragm in the interior chamber and being associated with the valve seat to prevent flow through the on-line drip emitter below a first pressure;
- a tortuous path downstream of the first diaphragm and valve seat;
- a second diaphragm spaced from the first diaphragm in the interior chamber and being capable of sealing the tortuous path upon being subject to a second pressure, and the entire second diaphragm being free to move in the interior chamber;
- wherein the second pressure is greater than the first pressure;
- and
- wherein the first and second diaphragms do not contact each other during operation and operate in different planes.
5 more elements
An online drip emitter comprising:
- a body defining an inlet, an outlet and an interior chamber;
- a valve seat communicating with the inlet and located in the interior chamber upstream of the outlet;
- a first diaphragm in the interior chamber and forming a convex surface being associated with the valve seat to prevent flow through the on-line drip emitter below a first pressure;
- a tortuous path downstream of the first diaphragm and valve seat;
- a second diaphragm spaced from the first diaphragm in the interior chamber and being capable of sealing the tortuous path upon being subject to a second pressure;
- and
- wherein the second pressure is greater than the first pressure;
- and
- wherein the first and second diaphragms do not contact each other and are oriented to operate in different planes.
6 more elements
Dependencies are inferred from the claim text.